37results about How to "Reduce tissue" patented technology

This invention discloses a spinning forming method for the inner wall of a large-size liquid rocket engine combustion chamber, comprising: pre-processing process steps on a CuCrZr alloy tube to obtain an alloy tube containing an effective portion and process steps; using a high-pressure spinning method to blank the CuCrZr alloy tube to obtain a cylindrical part with uniform wall thickness; assuming the thickness of the effective deformable portion of the CuCrZr alloy tube before blanking is δ0, and the wall thickness of the cylindrical part is δ1 = (0.4~0.6)δ0; performing solution heat treatment on the cylindrical part; and performing local high-pressure spinning on the workpiece to obtain a cylindrical part with variable wall thickness; assuming the wall thickness of the inner wall of the engine combustion chamber to be formed is δ f The wall thickness of the first part of the variable-thickness cylindrical component is δ. f The wall thickness of the second part is determined by δ f The thickness gradually increases to δ1, with the third part having a wall thickness of δ1; the cylindrical part is then spun and formed at the neck; the workpiece undergoes aging heat treatment to obtain the inner wall of the combustion chamber. This invention achieves a combustion chamber inner wall with good forming accuracy and mechanical strength using lower production costs and a shorter production cycle.